so the next time i buy tires, i would like to get different rims to make my blazer more of my own. i am looking at the cragar soft 8's, i have always liked the look of these rims. my questions is, what is the stock back spacing and what is the offset of the stockers? i want the tires to "stick" out some, so i am looking at 4 inches of backspacing and 0 offset on 5x4.75 bolt pattern. i would like to wrap these in 30inch tires, so i did not know if the tires would rub on the fender, i could just stick with 235's tho, i do not go off road much, but once in a while i do like to go. btw my blazer is a 98 ls and stock everything.

link to wheels: http://www.summitracing.com/parts/CRR-3975734/